Online PHP editor | output for 2Z7cj

@ 2014-02-24T13:10:01Z

<?php

$points = [
    [0, -1],
    [-2, 3],
    [4, 0],
    [3, 1],
    [5, 2],
    [0, 1],
];

$max_closest = [];

foreach ($points as $i => list($ax, $ay)) {
        $min_dist = INF;
        $dists = [];

        foreach ($points as $j => list($bx, $by)) {
                if ($i == $j) {
                        continue;
                }
                $dists[$j] = $sq_dist = ($bx - $ax) * ($bx - $ax) + ($by - $ay) * ($by - $ay);

                if ($sq_dist < $min_dist) {
                        $min_dist = $sq_dist;
                }
        }

        // select closest points
        foreach (array_keys($dists, $min_dist, true) as $key) {
                print_r($points[$key]); // print point

                // keep track of points that were closest
                if (isset($max_closest[$key])) {
                        ++$max_closest[$key];
                } else {
                        $max_closest[$key] = 1;
                }
        }
}

rsort($max_closest);

foreach (array_keys($max_closest, $max_closest[0], true) as $key) {
        print_r($points[$key]); // print point
}

Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7: Array ( [0] => 0 [1] => 1 ) Array ( [0] => 0 [1] => 1 ) Array ( [0] => 3 [1] => 1 ) Array ( [0] => 4 [1] => 0 ) Array ( [0] => 4 [1] => 0 ) Array ( [0] => 3 [1] => 1 ) Array ( [0] => 0 [1] => -1 ) Array ( [0] => 0 [1] => -1 ) Array ( [0] => -2 [1] => 3 ) Array ( [0] => 4 [1] => 0 )
Output for 5.4.0 - 5.4.45: Parse error: syntax error, unexpected 'list' (T_LIST) in /in/2Z7cj on line 14
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/2Z7cj on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected '[' in /in/2Z7cj on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/2Z7cj on line 3
Process exited with code 255.

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